Free games like Spoids
Below are 8 free-to-play Steam games similar to Spoids, 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 Spoids page.
Ranked picks
- 1

The Riftbreaker: Prologue
Free-to-play alternative to Spoids — no purchase or trial window. Shares Action and Strategy with Spoids.
The Riftbreaker: Prologue allows you to experience the events taking place before the story campaign of the main game. Explore an entirely new world. Gather resources. Build up a base. Defend yourself from thousands of alien creatures.
- 2

SCP: Secret Laboratory
Free-to-play alternative to Spoids — no purchase or trial window. Shares Action and Indie with Spoids.
Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape.
- 3

Splitgate
Free-to-play alternative to Spoids — no purchase or trial window. Shares Action and Indie with Spoids.
Splitgate is a free-to-play, fast-paced multiplayer shooter that features player-controlled portals. This sci-fi shooter takes the FPS genre to a new dimension with its portal mechanics, delivering high-flying, multi-dimensional combat.
- 4

Bloons TD Battles 2
Free-to-play alternative to Spoids — no purchase or trial window. Shares Action and Strategy with Spoids.
From the creators of Bloons TD6... Bloons TD Battles 2 is a brand new installment of the top-rated head-to-head tower defense game. Gather your Hero, choose your team of powerful Monkey Towers, and prepare to battle one on one against other players and relentless waves of Bloons!
- 5

Bloons TD Battles
Free-to-play alternative to Spoids — no purchase or trial window. Shares Action and Strategy with Spoids.
Go head to head with other players in a Bloon-popping battle for victory. From the creators of best-selling Bloons TD 5, this all new Battles game is specially designed for multiplayer combat, featuring the ability to control bloons directly and send them charging past your opponent's defenses.
- 6

Endless Sky
Free-to-play alternative to Spoids — no purchase or trial window. Shares Action and Indie with Spoids.
Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.
- 7

Yet Another Zombie Defense
Free-to-play alternative to Spoids — no purchase or trial window. Shares Action and Strategy with Spoids.
Darkness is coming. How long can YOU survive? Build your base by day, defend it by night. Play in online or local co-op. Stay alive as long as you can.
- 8

AirMech
Free-to-play alternative to Spoids — no purchase or trial window. Shares Action and Strategy with Spoids.
AirMech® Strike is a fast paced Action-RTS game that can be played solo, coop, or competitively online. Earn Kudos and Experience in battle and unlock a wide collection of AirMechs and Units while you practice the perfect strategy to emerge victorious!