Destroy the enemy mid tower
There is one tower per side. It is tougher than in normal Dota:
Dota×1
1v1×1.5
2v2×2.25 v0.9.3
In 2v2 the tower has 1.5 times the 1v1 health (it was twice the 1v1 health before v0.9.3).
RULES & ABILITIES · UPDATED FOR v0.9.3
Everything that is not normal Dota, on one page.
MORSO is Dota 2 on one mid lane, with a hero you pick from four and abilities you draft yourself. This page explains every rule the game adds or changes, in the order you meet them in a match. Values marked v0.9.3 are new in this patch.
- 1v1 · 2v2Arcade maps
- 4heroes offered
- 15 → 4abilities drafted
- 516abilities in the pool
- 2 · 4kills to win
01 · MATCH FLOW
From lobby to the horn
Every phase has a fixed timer, and the server runs it: nobody can see the other side's choices until they are locked. The match clock starts at the horn.
- no limit
Teams & READY
In 2v2 everyone clicks TEAM A or TEAM B, or the host presses RANDOMIZE TEAMS v0.9.3. The host picks Ladder, Tournament or Unranked, and everyone presses READY.
- 6 s
Side toss
A coin toss decides which side plays Radiant and which plays Dire.
- 20 s
Hero pick
One Strength, Agility, Intelligence and Universal hero, or Random. Your pick stays hidden.
- 60 s
Ability draft
Choose 4 of your own 15 offers and put them in the slot order you want.
- 20 s
Strategy
Buy your starting items. Right-click sells an item back for its full price.
- 30 s
Night
Heroes walk out before the horn. Fights already count: kills here score and pay bounty.
- 0:00
Horn
Creeps, runes and the match clock start. Day breaks.
02 · WINNING
Two ways to win
Whichever comes first ends the match: the enemy's mid tower falls, or your side reaches the kill limit.
Reach the kill limit
2kills in 1v1
4team kills in 2v2
- Any death caused by the enemy side counts: their heroes, summons, creeps or tower.
- Kills in the 30 seconds of night before the horn count.
- Not counted: a death saved by Aegis or Reincarnation, clones (Divided We Stand, Tempest Double), illusions, and deaths to Roshan, the Shard Wisp or neutral creeps.
03 · HERO PICK & ABILITY DRAFT
Pick a hero, then build it
Your hero brings its body, stats and its own innate ability. Every other ability is drafted, and your hero's normal spells and talent tree are removed.
Hero pick · 20 seconds
Strength1 random hero
Agility1 random hero
Intelligence1 random hero
Universal1 random hero
?Randomany hero + Mango + Faerie Fire
Random picks from every hero in the game and gives a free Enchanted Mango and Faerie Fire, which cannot be sold. If the timer runs out, you get a random one of your four offers and the same two items.
Ability draft · 60 seconds
- Ultimate (purple card)
- Passive
- Your choice
15 offers, all yours
Each player gets their own 15 random abilities from the pool of 516. Ultimates are allowed, and you may take up to four. Click or drag offers into your four slots, then lock.
Mulligan · 200 gold
Don't like the hand? A Mulligan deals a completely new set of 15 for 200 of your starting gold.
ALL RANDOM
Locks four random abilities at once and gives you one free ability change for the match. If the timer runs out instead, empty slots are filled from your offers with no bonus.
04 · DURING THE MATCH
Buy a new ability
Your build is never final. From the night phase on, the Buy button swaps one of your four abilities for a new one, as many times as you can pay for.
- 1
Pay
The first change costs 100 gold and every paid change adds 100 to the next. Free changes cost nothing and do not raise the price.
- 2
Choose the slot
Pick which of your four abilities goes. Only then are the offers dealt.
- 3
Pick from 5 offers
Take one of five new abilities, a Random one, or Discard to keep your build (the payment is not returned).
Free ability changes
- Every rune you pick up (see runes).
- Pressing ALL RANDOM in the draft (once).
What carries over
- Ability points you spent on the old ability come back, and the new one starts unlearned.
- The old ability's remaining cooldown moves to the new one.
- Units the old ability made (Golems, wards, Familiars…) disappear with it.
- Rearranging your four slots is always free.
05 · ABILITY ODDS
Fewer passive and ultimate stacks
The Buy new ability offers lean away from what you already have a lot of. The draft at the start is not affected: its 15 offers are evenly random.
Passive nerf · −10% per passive
Each passive you own makes every new offer 10% less likely to be a passive.
100%
0 owned90%
1 owned80%
2 owned70%
3 owned60%
4 ownedUltimate nerf · −20% per ultimate v0.9.3
Each ultimate you own makes every new offer 20% less likely to be an ultimate.
100%
0 owned80%
1 owned60%
2 owned40%
3 owned20%
4 ownedThe slot you replace does not count v0.9.3
You choose the slot before the offers are dealt, so the game already knows what leaves. If you replace a passive or an ultimate, that ability is left out of your count: swapping your only ultimate gives full ultimate odds. After you choose the slot, the shop shows the odds of that offer, for example “ultimates 40%, passives 90%”. The few ultimates that are also passives count for both rules.
Try it
06 · RIVER RUNES
Every rune is a free ability change
Runes spawn on the two river spots. Picking one up (or bottling it) gives you its normal effect and one free Buy new ability.
0:002 × bounty
2:002 × water
4:002 × water
6:001 power rune
8:00…every 2 min
A power rune appears on one random spot: Double Damage, Haste, Illusion, Invisibility, Regeneration, Arcane or Shield.
07 · GOLD & EXPERIENCE
Melee and ranged bonus
Every hero earns more than in normal Dota, and melee heroes earn the most to make up for fighting in range of a ranged mid.
Melee+50%
Ranged+35%
Kills, last hits, runes and Roshan all pay the bonus, and so does experience. Selling items and refunds are not earned gold.
150passive gold per minute, melee
135passive gold per minute, ranged
- The Gold per minute talent is added on top, without the bonus.
- Town Portal Scrolls have no cooldown during the match.
- Everyone has their own courier.
08 · TALENTS
A shared talent pool
Every hero gets two random talents at levels 10, 15, 20 and 25 from the same ten-talent pool, and no talent appears twice. Level 25 talents are meant to change the game.
| Talent | Lvl 10 GOOD | Lvl 15 GREAT | Lvl 20 EPIC | Lvl 25 IMBA |
|---|---|---|---|---|
| Attack damage | +25 | +45 | +75 | +140 |
| Maximum health | +250 | +450 | +750 | +1400 |
| Maximum mana | +250 | +400 | +650 | +1200 |
| Armor | +5 | +8 | +12 | +22 |
| Attack speed | +30 | +50 | +80 | +150 |
| Evasion | +12% | +18% | +25% | +40% |
| Magic resistance | +10% | +15% | +22% | +35% |
| Spell amplification | +8% | +12% | +18% | +30% |
| Movement speed | +25 | +35 | +55 | +100 |
| Gold per minute | +80 | +140 | +220 | +400 |
09 · THE MAP
Objectives and late game
One lane through the central island, six creep camps, two Ancient camps, a Lotus Pool and a Secret Shop. Two neutral objectives are worth fighting for.
Roshan
One Roshan with half of Dota's effective health: every hit on him does double damage. He drops the Aegis and Aghanim's Blessing, and he never respawns.
Shard Wisp
Guards Aghanim's Shard in the mist at the bottom right. It attacks heroes within 650 range, burns 32 mana per hit, heals for 20% of its attack damage and may split into short-lived copies (at most six). It drops Aghanim's Shard when it dies.
Lane creeps get stronger
0:00a wave every 30 s
15:00super creeps
20:00mega creeps
25:00double waves
30:00triple waves
10 · CHANGED ABILITIES
What works differently
Most abilities work exactly as in Dota 7.41f. These are the ones MORSO changes so they work on any hero, or so they stay fair in a duel.
Ogre Magi
Multicast
All chances are half of Dota's: ×2 37.5%, ×3 15%, ×4 7.5%, and 1% more per 32 Strength. It also repeats point and no-target spells, ultimates included. It never repeats passives, toggles, channels, items or spells that move or hide the caster.
Tinker
Reharm
Rearm is Reharm: casting it also costs health equal to its mana cost. It can never kill you; health stops at 1.
Tinker
Keen Conveyance
A draftable ability of its own instead of a free extra with Rearm. It levels itself at hero levels 1, 6 and 12.
Meepo
Divided We Stand
Works on any hero. You get one copy per ability level, and the group shares one life: lethal damage to a copy kills your hero (one kill for the enemy), and the copies return with full health when you respawn.
Pangolier
Shield Crash
Always gives its barrier for each enemy hero hit, also on heroes where Dota's own barrier fails to appear.
Dark Willow
Terrorize & Bedlam
Two separate ultimates that are drafted one at a time.
Phantom Assassin
Coup de Grace
Comes without Blur: drafted abilities never bring another hero's innate ability.
Arc Warden · Morphling
Tempest Double & Attribute Shift
Work on any hero and are cleaned up properly when you buy a different ability in their place.
All illusions
Illusions copy your build
Illusions of a hero carry that hero's drafted abilities and talents, not the hero's original spells.
Summons
Summons leave with their spell
Golems, wards, Familiars, Treants, Spiderlings, Eidolons and other summons die when you replace the ability that made them.
Helper buttons
Two-part spells come whole
Release, return and stop buttons (Illusory Orb's Jaunt, Sun Ray's stop, Ice Blast's release…) come with their ability and do not use a slot.
11 · TEAM GAMES
What changes in 2v2
Choose the 2v2 map in the Arcade. Everything above applies, with these differences.
| 1v1 | 2v2 | |
|---|---|---|
| Kills to win | 2 | 4 team kills |
| Mid tower health | 1.5 × Dota | 2.25 × Dota v0.9.3 |
| Teams | — | Players pick TEAM A or B, or the host presses RANDOMIZE TEAMS v0.9.3; a Dota party plays on the same team |
| Chat | Team select and lobby chat | Chat already on the team select screen v0.9.3, then ALL and TEAM channels; team chat stays open through the draft |
| Your teammate | — | You see their abilities live in the draft and both heroes in strategy |
| A player leaves | The other player wins | The match continues 2 against 1 |
| Ladder | Same MMR for both modes; Ladder and Tournament need full teams, Unranked allows uneven teams | |
12 · MODES, MMR & LEAVING
Unranked, Ladder and Tournament
The lobby host chooses the mode before READY. The match itself is the same in every mode; only what is checked and recorded changes.
| Unranked | Ladder | Tournament | |
|---|---|---|---|
| Changes MMR | No | Yes | Ranked tournaments only |
| Steam link needed | No | Every player | Every player |
| Full teams | No | Yes | Exactly the series' players |
| Cheats enabled v0.9.3 | Allowed | Cannot start | Cannot start |
| Ping limit | None | 200 ms for everyone | 200 ms in ranked tournaments |
| How it starts | READY | Each player's game joins and confirms the match | The host enters the series code from morsomid.com |
How MMR moves
Everyone starts at 1000. A win against a stronger player is worth more (Elo). The change is up to 40 while either player has fewer than 10 rated matches, then up to 24, and always at least 1. In 2v2 each player is rated against the opposing team's average MMR.
Games without MMR
Matches shorter than 2 minutes, games between players on the same network and games without every player Steam-linked are recorded without changing MMR. After 3 rated matches against the same opponent in 7 days, further results count half.
Leaving a match
Two minutes disconnected counts as leaving. In 1v1 the leaver loses; in 2v2 the match goes on 2v1. The leaver loses 25 extra MMR, and leaving again within 7 days adds a Ladder cooldown.
- warning
- 15 min
- 1 h
- 6 h
- 24 h
Rank medals go from Creep to Mad Moon in five divisions each; the leaderboard lists Steam-linked players with at least 3 rated matches against 2 different opponents. Season 0 ends on 31 December 2026, when MMR returns to 1000 (seasons). More detail: how results are checked, how MMR changes and leaving a match.
13 · FAIR PLAY
Play it straight
Hacking, cheating, exploiting bugs or arranging results can lead to a ban from MORSO or removal from the leaderboard. A Ladder or Tournament game cannot start in a lobby with cheats enabled v0.9.3, and cheats switched on during a rated match are logged in its match summary. A moderation ban blocks every mode, Unranked included; departure cooldowns only block Ladder. You can report a player or a team from the match review in game or from your match history.
This page follows the game's own code for v0.9.3. Found something that doesn't match? Tell me by email. All changes per patch: full changelog.