Free games like Tower & Invasion
Below are 9 free-to-play Steam games similar to Tower & Invasion, 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 Tower & Invasion page.
Ranked picks
- 1

Ultimate Custom Night
Free-to-play alternative to Tower & Invasion — no purchase or trial window. Shares Action and Indie with Tower & Invasion.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2

Bongo Cat
Free-to-play alternative to Tower & Invasion — no purchase or trial window. Shares Indie and Simulation with Tower & Invasion.
Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?
- 3

Indigo Park: Chapter 1
Free-to-play alternative to Tower & Invasion — no purchase or trial window. Shares Action and Indie with Tower & Invasion.
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.
- 4

STRAFTAT
Free-to-play alternative to Tower & Invasion — no purchase or trial window. Shares Action with Tower & Invasion.
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.
- 5

Awaria
Free-to-play alternative to Tower & Invasion — no purchase or trial window. Shares Action and Indie with Tower & Invasion.
Awaria is a short game about working in haunted maintenance tunnels.
- 6

Virtual Cottage
Free-to-play alternative to Tower & Invasion — no purchase or trial window. Shares Indie and Simulation with Tower & Invasion.
Virtual Cottage gives you a comfy place to rest and be productive without any distractions. Open the game, set yourself a goal and enjoy the atmosphere.
- 7

The Expendabros
Free-to-play alternative to Tower & Invasion — no purchase or trial window. Shares Action and Indie with Tower & Invasion.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 8

Steam Engine Simulator
Free-to-play alternative to Tower & Invasion — no purchase or trial window. Shares Simulation with Tower & Invasion.
The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.
- 9

Whispers of the Architects
Free-to-play alternative to Tower & Invasion — no purchase or trial window. Shares Strategy and Indie with Tower & Invasion.
Echoes of the Architects is a fast-paced real-time strategy game where creativity drives victory. Design modular, programmable units to build your perfect army. Adapt and outsmart your opponents in dynamic skirmishes that reward tactical precision, ingenuity, and strategic mastery.