Rare Side Effects Studio

Now dispensing

Our games

Both play right in your browser, on a phone, a tablet or a computer. Nothing to download.

Tap Tap Sahur

Play free now

Tap Tronchetto. Fill the meter. Let the drums roll.

Tap like crazy to charge your rolls, and keep going for a Tap Frenzy.
Roll for credits with cascades, giant wilds and boss bonus rounds.
Open packs and build a crew that keeps earning while you're away.
A collection that takes about a month, with camp trips, a lab and story chapters.

▶ Play now

A Legendary card revealed from a crew pack

Brainrot Gem Quest

Play free now

A brick breaker, a bubble shooter and a boss fight walk into a mine…

Mine walls of gems with exploding, lightning and multiball bricks.
Refine your haul in a bubble shooter before the field crushes you.
Battle bosses: parry, swipe and combo, then seal the ring to catch them.
Collect a crew from packs, travel a world tour and brawl other players.

▶ Play now

Five Sahur Drums on the reels — 5 Sahur Drums

A new crew member from a Boss Box — Boss Box pull

Sealing the capture ring — Seal the Ring

Please read the label

Side effects may include

Take one game daily. Or forty.

Uncontrollable tapping
Yelling "LEGENDARY" at 2 a.m.
Naming your houseplants after bosses
Hearing drums when there are no drums
A sudden urge to collect everything
Parrying things in real life

Not real medical advice. Real side effects are rare, which is the whole joke. Ask your doctor if brainrot is right for you (spoiler: yes).

The studio

Hi, I'm Dr.Dev.

I'm a doctor turned game dev, and Rare Side Effects is my one-person studio. I make the kind of games I'd want to play on a break: quick to pick up, hard to put down, and silly on purpose.

💊 Free to play 🚫 No real-money purchases 🔒 No personal data collected 💬 No chat with strangers

Refills weekly

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New clips, sneak peeks and updates for both games.

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