Robots are invading the country, and it’s up to you to take care of a small hamster-slash-nuclear-weapon-of-mass-destruction to save the day! MOCHI-O is a wacky and weird game that mixes elements from both bullet heaven games and arcade shooters to create a short and bite-sized experience that feels incredibly satisfying to play.
With doomsday here, you start your new job as the handler or caretaker of the titular Mochi-O – a hamster-shaped weapon of mass destruction that could literally destroy the world if it weren’t for your care and affection. Nurture him well, and you’ll be able to fend off the waves of enemies that come invading the city! Fail to do so, and you shall meet the fate of your predecessor.
Developer: Zxima
Publisher: Kodansha
Genre: Indie, Strategy, Arcade Shooter, Bullet Heaven
Release Date: January 19th, 2026
Reviewed on: PC
Available on: PC
Copy was provided by StridePR.
The game centres around nurturing and caring for Mochi-O in tamagotchi-style minigames, followed by the wonderful destruction of hordes of enemies (and various cityscapes) that you may know and enjoy from titles like Earth Defence Force. Arguably, we’re doing more harm to the cityscape than the robotic invaders, but in the end, we’re still saving the day.
Part of the gameplay loops revolves around upgrading Mochi-O and increasing your bond. For this, you’ll have to pet Mochi-O and feed it seeds accumulated through battles to raise its friendship level and acquire buffs for the ongoing onslaught. This also helps increase the maximum level you can get in every battle, meaning more weapon upgrades and better stats and the like.
The other half of the gameplay is about literally defending a city. For this, you’ll venture out there and aim Mochi-O at the enemies to then blast them with various buzzsaws, rifles, black holes, flamethrowers, and more, resulting in absolute carnage. It’s really funny, actually.
Enemy robots will drop seeds that you can pick up immediately to earn experience. If you’ve played Vampire Survivors, Boneraiser Minions, Maze Mice, or any of the other many, many, many Bullet Heaven games, you’ll notice this gameplay principle of collecting gems or other resources that then fill up an experience bar and offer you a choice of various weapons to collect.
Mochi-O, however, adds a twist to it in that seeds left alone for a while will eventually sprout into sunflowers, which then later drop more seeds. So, there is a certain level of patience that gets rewarded if you can hold out for long enough without upgrading.
Beyond that, though, the game is as simple as it gets, and perfect for anyone who loves the dopamine of a game drip-feeding you upgrades until you’re satisfied.
You unlock new weapons, various stat upgrades, and even get to decorate your room. MOCHI-O is almost incremental in how it works due to its mission-based structure, which aids in making the core gameplay loop of “fight, earn meta currency, upgrade” less repetitive.
Instead of heading into a completely random run each time, you instead focus on completing specific missions to the best of your ability, much in the way that Earth Defence Force does. You can switch things up, try different upgrades, and compete against yourself for a better score each time. Beyond that, by petting Mochi-O before the mission begins, you’ll also get boosts for different weapons, hence incentivising you to try out different builds rather than always sticking to whatever works “best”.
What I will need to say, though, is that the game sometimes imposes walls to overcome for you that can feel rough from time to time. Some of the “superbosses” you face just sort of feel unstoppable for the longest time until you invest in specific upgrades and get kind of lucky with the upgrades and fusions you encounter. Don’t get me wrong, for a game available for a fiver, I don’t really expect the most in-depth strategy or anything… but I still would have liked some more depth instead of running into certain “stat checks” so to speak. Hitting specific weak spots or engaging in some kind of cool new mechanic or something, you know?
Eventually, you’ll beat them down, but it doesn’t feel amazing, knowing that you’ve only done so because of meta progression and after many failures. If you’re less bothered by that, though, you’ll probably love the harder difficulties the game has to offer.
Another issue I had with the game was the control scheme: By all means, this game should work just fine with a mouse, but the menuing becomes really difficult and frustrating at times. The controller works better in those cases, but I just personally don’t dig aiming with joysticks all that much.
Furthermore, all the explosions and numbers on the screen can also block your vision a fair bit, sometimes to the point that you don’t see enemies encroaching on the last line of defence. This would be easily fixed if there were an option available to highlight enemies, reduce explosions and other VFX, or perhaps even an option to remove the damage numbers altogether. The visual clutter can get a bit much.
It’s not a perfect game, but it doesn’t really have to. As one of the developer’s first games, there’s a lot to learn from here, and I’m eager to see what they’ll cook up in the future. Also, it’s relatively cheap, provides a good amount of playtime, and it’s funny enough for me to overlook some of these issues!
Mochi-O is a title that doesn’t overstay its welcome and works perfectly as a quick arcade-style distraction from the mundanity of life. The stark juxtaposition between the cute hamster and the absolute carnage it provides also just never gets old for me. I do recommend picking this game up if you’re here for a good time, not a short time.
Verdict: Mochi-O is very rough around the edges and super simplistic in its premise but for what it's worth, it costs a fiver and provides a ton of fun and gameplay in that time. I think it's well worth grabbing if you're into that dopamine-chase of bullet heaven games and the quick challenges arcade-style shooters provide. The humour and charm the game provides make it a lively and very funny experience that makes me eagerly await what the developer is gonna cook up in the future!
This post was originally written by Dan Dicere from Indiecator.
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