Game Information

Developer: SZ Games

Rating:

4.6/5

Released: April 2024

Last Updated: June 2025

Technology: HTML5 (Unity WebGL)

Platform: Browser

Size: ~15 MB

Plays: 15,531

Mobile Support: No

About Grimace's Birthday

Step into a pixel-perfect McDonaldland with Grimace's Birthday, a free indie arcade adventure that will instantly put a smile on your face! It’s Grimace’s special day, but the party can’t begin until he finds his missing friends—Birdie the Early Bird, the Hamburglar, and the mischievous McNugget Buddies. The clock is ticking: you have just 30 minutes to track them down and gather enough birthday shakes, racing through bright and nostalgic McDonald's-inspired stages.

Every inch of Grimace’s world bursts with vibrant retro art, lovingly crafted in a style reminiscent of classic browser games. The upbeat, chiptune soundtrack will get your heart racing as you dash through restaurant play zones, bounce on birthday balloons, and explore the iconic McDonald’s décor. The easy-to-learn controls make this a perfect pick-up-and-play hit for both quick breaks and longer arcade sessions.

As Grimace, you’ll need fast reflexes and clever thinking to uncover all the hidden corners and outsmart pesky obstacles blocking your search. Each character you rescue brings a joyful reunion—and even more birthday cheer to the party. Collecting birthday shakes isn’t just for fun: each one unlocks special surprises that add to the festive vibe and help you rack up a high score.

Whether you’re here for a dose of retro gaming nostalgia or looking for a new indie gem, Grimace’s Birthday is a fast-paced celebration packed with humor, challenge, and wholesome fun. Dive in to relive childhood memories, compete for top scores, and make sure Grimace blows out his candles in time for an epic McDonaldland bash!

How to Play

Jump into Grimace’s Birthday with minimal setup: as soon as the game launches in your browser, you’re on the clock with just 30 minutes to find Grimace’s friends and collect as many birthday shakes as possible. Use your keyboard’s arrow keys to move Grimace left and right; use the Spacebar to jump across obstacles and platforms. Each scene features dynamic scenery—balloon bounce pads, slides, play structures, and hidden passageways—evoking classic birthday party adventures.

Explore carefully! Characters like Birdie and the Hamburglar may be tucked away in secret corners or behind interactive objects. Interact with key items by moving close and pressing the designated action key (usually Enter or Z, check on-screen prompts). Collecting birthday shakes is essential—not only do they boost your score, but some may grant temporary speed boosts or open up shortcuts. The timer ticks down in the corner, so plan your route and gather as many shakes and friends as you can before time runs out.

For newcomers, focus on navigating the main areas and spotting visual cues—colorful balloons, slightly odd textures, or sound pings often indicate points of interest. Don’t forget to double back or experiment with jumping off edges—there are plenty of hidden secrets for explorers! No prior arcade experience is needed—the intuitive controls and fun visuals make Grimace’s Birthday instantly accessible.

Controls

mouse

keyboard

Tips & Tricks

Keep an eye out for secret nooks—many friends and shakes are hidden off-screen.
Prioritize rescuing friends first; they unlock new areas with more shakes.
Use your jump wisely—some platforms hide boosts that let you reach higher spots.
Watch for distinctive audio pings—they often indicate hidden goodies nearby.
Memorize the quickest routes between areas to maximize your time before the clock runs out.
Grab every shake, as certain thresholds unlock party bonuses and Easter eggs.
Replay to discover all the birthday secrets and challenge your top score.