Sumorbit (tuxdb.com)

Planets sumo wrestle on a variety of maps with hazards like black holes and wormholes.

Easy to pick up for casual players
Depth for competitive players

Game Modes

Local multiplayer (up to 8 players)
Single player campaign
Online multiplayer (with Steam Remote Play Together, there can be some delay)
Team battles
Single player vs AI
Tutorials & practice

Single Player Campaign

Complete a variety of missions from planets gaining sentience to the end of the universe.

Sumo: Combat with other planets for survival.
Cargo: Solve puzzles to deliver cargo between planets.
Cleanup: Destroy all asteroids on the map and use movement to beat goal times.
Safezone: Survive and save allies from hazards.

Planet Customization

Select your favourite of the 8 planets
Modify 8 stat values including speed, range, grip & more
Over 1 million combinations

Update 2.1.10

More sumo achievements:
- Sun 'n Death: Survive until the star(s) die on the last round of a first to 3+ sumo match
- Tie Fight: Finish a sumo round in a tie

Campaign:
- Adjusted goal times for many missions
- Added an extra check to prevent defaulting to the first mission on return to mission select
- Varied pitch for change mission sound effect
- Removed button prompts and text from mission preview images
- Added a button prompts toggle to campaign settings

Lobby:
- Can't start a sumo match without a controlled player
- Logo hidden when 5 or more players
- Increased background stars size for ultrawide screens

Chapter 3 beta:
- "Black Hole Control" relic changed to a challenge
- "Necropolis" relic changed to debris rather than a challenge