Single-player games like S.U.M. - Slay Uncool Monsters
Below are 14 single-player Steam games similar to S.U.M. - Slay Uncool Monsters, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like S.U.M. - Slay Uncool Monsters page.
Ranked picks
- 1
Super Algebrawl
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
Add up, multiply, clone, and divide your party members to beat the monsters on your path!
- 2
Human Resource Machine
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie and Casual with S.U.M. - Slay Uncool Monsters.
Program little office workers to solve puzzles. Be a good employee! The machines are coming... for your job. From the creators of World of Goo and Little Inferno.
- 3
Tetris® Forever
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Casual with S.U.M. - Slay Uncool Monsters.
Celebrate 40 years of Tetris® with 15+ games, a new game, and documentary videos
- 4
Frogun
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
Join Renata as she adventures across a world of mystical ruins with the titular FROGUN! Frogun is an old-school platformer with the soul of the PS1/N64 era, in which your frog-shaped grappling hook is a your best friend!
- 5
Pix the Cat
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
Pix the Cat is a critically acclaimed intense arcade game that will challenge your reflexes and your wits, pitting you against your friends and the world in a race to the highest score!
- 6
3D Math - Ultra
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
Mathematic Ultra - is both simple and complex challenges!
- 7
Halls of Torment
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
Slay hordes of terrifying monsters in this horde survival roguelite. Descend into the Halls of Torment where the Lords of the underworld await you. Treasures, magical trinkets, and a growing cast of heroes will grant you the power to vanquish these horrors from beyond. How long can you survive?
- 8
YEAH! YOU WANT "THOSE GAMES," RIGHT? SO HERE YOU GO! NOW, LET'S SEE YOU CLEAR THEM! 2
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Casual with S.U.M. - Slay Uncool Monsters.
"Those Games" are back! Play through familiar minigames to your heart's content! Take on five different minigames with a total of 250 stages! Sit back and play fully, thoroughly, and enjoyably!
- 9
This Strange Realm Of Mine
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
This Strange Realm Of Mine is a First Person Shooter mixed with poetry and psychological horror. Graphic style is 3D mixed with pixel art.
- 10
Koala Kids
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
Koala Kids is a puzzle-platformer game, in the style of retro games like Lode Runner. Includes Hot-seat Coop and Level Editor.
- 11
3DRPG
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
3DRPG is a voxelized old-school RPG where you explore a Randomly Generated world filled with random dungeons, towns and people! Every character in the game is recruitable. Hunt for prey or go fishing for food. Search for treasure in dungeons and fight monsters on the way!
- 12
Oh No! Bugs!
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie and Casual with S.U.M. - Slay Uncool Monsters.
Oh No! Bugs! Is a casual arcade game where you squash bugs by pushing blocks. Play solo or with friends, locally or online!
- 13
Koala Kids Golf
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie and Casual with S.U.M. - Slay Uncool Monsters.
Control your Koala and collect treasure while avoiding dangers in this non-traditional Golf Game. Play through Challenges or with friends, Local or Online!
- 14
You Shouldn't Be Here
Single-player alternative to S.U.M. - Slay Uncool Monsters — playable solo, no multiplayer required. Shares Indie with S.U.M. - Slay Uncool Monsters.
This short psychedelic visual novel takes place in a strange world inhabited by harrowing creatures shunned by the light. You’ll meet someone who has made this world their own, and in doing so, learn the reason why you shouldn't be there.