Free games like Interregnum
Below are 8 free-to-play Steam games similar to Interregnum, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Interregnum page.
Ranked picks
- 1

Indigo Park: Chapter 1
Free-to-play alternative to Interregnum — no purchase or trial window.
Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.
- 2

STRAFTAT
Free-to-play alternative to Interregnum — no purchase or trial window.
STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.
- 3

The Lab
Free-to-play alternative to Interregnum — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 4

Landfall Archives
Free-to-play alternative to Interregnum — no purchase or trial window. Shares Strategy with Interregnum.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
- 5

Outpath: First Journey
Free-to-play alternative to Interregnum — no purchase or trial window.
Outpath: First Journey is a prologue chapter of the main game, Outpath. An experimental clicker base building game. Craft, gather & manage resources, build your base and buy more islands to exploit and expand!
- 6

Die in the Dungeon: Origins
Free-to-play alternative to Interregnum — no purchase or trial window. Shares Strategy with Interregnum.
Fight your way through a mysterious dungeon in this deck-building, turn-based roguelike game where you don't use cards, but DICE! Deal with enemies by combining dice on your board, boost their effects with magical relics, and discover the story behind Die in the Dungeon!
- 7

NERTS! Online
Free-to-play alternative to Interregnum — no purchase or trial window.
NERTS! Online is a fast-paced competitive solitaire game for you and up to five of your friends, played the same way we play it at the Zachtronics office!
- 8

Jigsaw Puzzle Dreams
Free-to-play alternative to Interregnum — no purchase or trial window.
Beautiful Multiplayer Jigsaw Puzzle game where you can design the room you play in!