Yes — MONMUSU is free to play, so you can install and play it without buying anything.

Is MONMUSU Steam Deck compatible?

Mostly. Valve rates MONMUSU Playable on Steam Deck: it runs, but may need some manual tweaking — a community controller layout, or zooming in on small text.

Can I play MONMUSU on Mac?

Not natively — Steam lists no macOS version of MONMUSU. Mac players would need a cloud gaming service or a Windows compatibility layer.

Is MONMUSU multiplayer?

No — Steam lists MONMUSU as single-player only.

Is MONMUSU on PC Game Pass?

No — MONMUSU is not on PC Game Pass right now.

MONMUSU

Tentacle Games · May 12, 2018 · Sexual Content, Nudity, Free to Play, Anime, Incremental

MONMUSU is free to play — no purchase needed. We track it so you know if that ever changes.

Anime deals

Very Positive80% · 5,25014playing now

Best price

Free

Get it free on Steam

This game is free to play. Get it on Steam →

Screenshots

MONMUSU price

MONMUSU is free to play — there is no purchase price, on Steam or anywhere else we track. We keep watching it, so if it ever stops being free the price history on this page will show when that happened and what it changed to.

About MONMUSU

✦ AI summary

Summon and collect adorable monster girls while managing your resources in this free-to-play idle simulation game. Progress through engaging gameplay by earning money to gather summoning materials and expand your collection at your own pace.

You are an up and coming summoner and a lover of monster girls. Earn money to gather up summoning materialsand summon monster girls!

MONMUSU — game info

Platforms: Windows
Steam Deck: Playable
Player modes: Single-player
PC Game Pass: Not included

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

✦ AI summary

MONMUSU is an idle game centered around collecting monster girl characters with appealing artwork, but players consistently criticize the extremely passive gameplay loop that revolves around waiting through long timers with minimal interaction between sessions. While the character designs and art are praised, the game fails to create compelling reasons to return regularly, and most players feel it offers little engagement beyond occasional check-ins, making it suitable only for those seeking extremely low-effort entertainment at no cost.

Recommended Sep 23, 2026

A cute little idle game with art from Sayori. Scenes aren't as good as Nekopara, but they're still good. You will need the free 18+ patch from the developer's website in order to access the scenes. 9 girls were added before this game was seemingly abandoned. Out of those, Sadie and Saki are my personal favorites, but the others are also good.

2 found this helpful

Not recommended Sep 22, 2026

It's novel at first but you soon max out and there is nothing to keep you playing.

1 found this helpful

Recommended Sep 12, 2026

Auto click, Wait, Unlock all monster girl and then beat your meat. That's all.

1 found this helpful

Recommended Sep 7, 2026

peak

1 found this helpful

Recommended Sep 13, 2026

Thicc Waifus!

Not recommended Sep 9, 2026

Takes the idle part of idle game to the extreme. Spend a few minutes a day spending your accrued resources, and then wait for an arbitrary timer to count down so you can do it again. The art of the girls is nice, if not a bit basic. Not really even worth the time it takes to check in on it.

Community reviews

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