Free games like Now Open! Horror House
Below are 8 free-to-play Steam games similar to Now Open! Horror House, 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 Now Open! Horror House page.
Ranked picks
- 1

Yet Another Zombie Defense
Free-to-play alternative to Now Open! Horror House — no purchase or trial window. Shares Strategy and Indie with Now Open! Horror House.
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.
- 2

Idle Hero TD - Tower Defense
Free-to-play alternative to Now Open! Horror House — no purchase or trial window. Shares Strategy and Indie with Now Open! Horror House.
Endless idle tower defense game full of deep strategy and combat mechanics. Unlock and upgrade dozens of epic fantasy heroes to defeat an infinite swarm of enemy monsters. Strategize hero positions, synergies, and skills for an effective defense, then sit back and let the auto-battler do its thing!
- 3

Clicker Heroes
Free-to-play alternative to Now Open! Horror House — no purchase or trial window. Shares Strategy and Indie with Now Open! Horror House.
Click your way through hordes of monsters, earn gold, and recruit quirky heroes with powerful skills. Progress even while you're idle, and watch the numbers climb into the absurd. It’s a never-ending journey of clicks, crits, and colossal damage.
- 4

Zombidle : REMONSTERED
Free-to-play alternative to Now Open! Horror House — no purchase or trial window. Shares Strategy and Indie with Now Open! Horror House.
Like the song says, good guys finish last, and in this case, they also finish homeless and on fire. Welcome to Zombidle, Berzerk Studio's newest idle game, or tap game; whatever, you do you, man.
- 5

Zombie Defense
Free-to-play alternative to Now Open! Horror House — no purchase or trial window. Shares Strategy and Indie with Now Open! Horror House.
A modern hybrid of the classic RTS and modern Tower Defense. Recruit soldiers, place them on slots and let them shoot incoming waves of zombies by their own. Order supplies, throw grenades, order airstrikes and many more... Perfect mix of strategy, tactics and micromanagement.
- 6

Mr.Mine
Free-to-play alternative to Now Open! Horror House — no purchase or trial window. Shares Strategy and Indie with Now Open! Horror House.
Explore the depths of the earth and uncover hidden treasures in this addictive idle mining game. Unlock the power of your drill with hundreds of upgrades, discover mysterious relics, and unearth priceless gems. Can you master the mines and reveal their deepest secrets? Dive in and dig deep!
- 7

Idling to Rule the Gods
Free-to-play alternative to Now Open! Horror House — no purchase or trial window. Shares Strategy and Indie with Now Open! Horror House.
Idling to Rule the Gods is a free to play Idle-Game with a lot of content and some Minigames. Depending on your play-style, you can play it fast or slow. Either way it can be fun for hundreds of hours!
- 8

Bloons TD Battles 2
Free-to-play alternative to Now Open! Horror House — no purchase or trial window. Shares Strategy and Indie with Now Open! Horror House.
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!