Monster House
Arcade · AlohaFactory
Monster House screenshots
If you like the idea of a defense game that asks you to think about where things go rather than how fast you can tap, Monster House is worth a closer look. It is a free arcade title from AlohaFactory in which you stop enemies pushing through a house by arranging traps and monsters along the way. The pitch is simple, the rounds are short, and the strategy sits in placement rather than reflexes.
The game has found a sizeable audience: more than a million installs and a 4.6 average from over 18,000 ratings. That is a strong signal for a casual defense game, though ratings tell you how people felt about the experience rather than how deep it runs. The developer describes it as easy and simple, which fits the arcade category and the Everyone rating.
A house you defend from the inside
The premise is that enemies rush through a house and you have to stop them. Your tools are traps and monsters, both of which you position indoors rather than on some open battlefield. The developer lists beds, dinosaur bones, ghosts and carpets among the traps, which suggests the house itself is the arsenal: ordinary objects turned into obstacles.
What I like about this setup is how it changes the usual defense rhythm. Instead of building lanes and towers on a blank map, you are working with rooms and corridors and whatever the house gives you. The developer also notes that luck plays a part alongside strategy, which is worth taking at face value. If you want a game where every outcome is decided purely by planning, that mix may not sit well; if you are happy with a little unpredictability, it keeps rounds from feeling solved.
How a round comes together
A round involves placing obstacles and then upgrading them. You earn rewards by winning battles, and those rewards feed back into the traps and monsters you are using. The interesting part is the observation: you watch how enemies move, where your traps sit, and how each trap behaves, then adjust. That loop of watching and rearranging is where the strategy lives.
Monsters are not interchangeable either. They differ in where they can be placed, how far they attack and how much damage they do. That means choosing a monster is a decision about coverage and positioning, not just raw strength. I would expect the more satisfying rounds to be the ones where a small change in placement changes the whole outcome.
Different traps and monsters can be combined to express your own style. That is a reasonable claim for this genre: with several trap types and monsters with distinct attributes, there is room for more than one workable approach. Whether the balance supports many of them is something only play will tell you.
Cards, merging and the world map
Between battles, the game gives you a progression layer. You collect card pieces and level up to make your monsters stronger, and you can merge monsters to create more powerful ones. That is a familiar structure for anyone who has played a collection-based game, and it gives the short rounds a longer arc.
There is also a World Map mode, which gives the game a sense of travel and variety, since each stop on the map is another house to defend.
The combination is what keeps a game like this going: a battle layer that rewards placement, and a collection layer that rewards persistence. The result is meant to feel immersive, which seems like the right ambition for a game built on repeated short sessions. What I would watch for is whether the card and merge systems stay interesting once the early monsters are leveled.
What it costs and what comes with it
Monster House is free to install and carries ads, and it also offers in-app purchases.
I would treat the purchases as part of the design rather than an afterthought. Collection games often tie progress to card pieces and levels, and this one is built on exactly those systems. If you prefer to avoid spending entirely, that is a personal threshold, and it is worth deciding early rather than after you are invested.
The kind of player this fits
This looks best suited to someone who wants a defense game with a light strategic core and a collecting habit attached. The rounds are framed as simple and easy, the rating is Everyone, and the systems are familiar: place, upgrade, collect, merge. If that description sounds comfortable rather than tired, you will likely settle in quickly.
It is less obviously a fit for players who want a defense game decided entirely by skill. The developer is upfront that luck is part of the mix, and the card and merge layers add another variable on top. That does not make the strategy meaningless, but it does mean outcomes will not always track how well you planned.
The last thing to weigh is the free-to-play shape. Ads and in-app purchases are part of the package, and the progression is built around collecting and strengthening monsters. If you can accept that framing, Monster House offers a tidy, well-liked version of it with a premise that stands out from the usual tower defense setting.
A defense game for patient collectors
Monster House is a free arcade defense game about arranging traps and monsters inside houses, then strengthening your roster through card pieces and merging. It has been out since June 2022, has more than a million installs, and holds a 4.6 average across over 18,000 ratings, which suggests it has kept a good number of players happy over time.
I would recommend it to players who enjoy placement-driven defense with a collection layer and who are comfortable with ads and optional purchases. The World Map mode and the variety of traps give it more to do than a single-mode arcade game, and the short rounds suit playing in small stretches.
If you want a defense game where planning alone decides the result, the developer's own note about luck is the thing to weigh. For everyone else, this is an easy game to try, and the price of entry is nothing.
The short verdict
A free, well-rated trap defense game with a collection layer, best for players who enjoy light strategy and don't mind ads or purchases.
App specs
- Version1.2.7
- UpdatedApril 29, 2026
- Downloads1M+
- RequiresAndroid 8.0+
- PriceFree
- Age ratingEveryone
Monster House: frequently asked questions
What do you actually do in Monster House?
You defend a house against enemies rushing through it by placing traps and monsters inside. Winning battles earns rewards that you put back into your setup.
Does Monster House cost anything?
It is free to install, includes advertising, and offers in-app purchases.
How do you make your monsters stronger?
You collect card pieces and level up to strengthen a monster, and you can merge monsters to create more powerful ones. Monster cards come from the World Map and unlock a new monster when drawn.
Is Monster House purely a strategy game?
It requires strategic play while also including an element of luck. Monsters have different placement rules, attack ranges and damage ranges, so positioning matters, but a round will not always turn on planning alone.
What is the World Map mode?
It is a mode where you fight at houses around the world. Monster cards come from clearing the map, and drawing them can unlock a new monster. It gives the game a second layer beyond individual battles.
Pros
- Free to install and try
- Trap placement gives rounds a strategic core
- Monsters differ in range, damage and placement
- World Map mode adds variety across houses
- Card pieces and merging extend progression
Cons
- Contains advertising
- Offers in-app purchases
- Luck affects outcomes alongside strategy
- Progress leans on collecting card pieces
Download Monster House
by AlohaFactory
Free · In-app purchases · Contains ads · Official store listings