Pac Man Roblox

Building a Pac Man clone in Roblox Studio

Most people come to this thinking they can just drag and drop a Pac Man asset and call it done. It doesn't work that way. You're building from scratch because Roblox doesn't ship with a Pac Man template or even a labyrinth kit. What you end up with is a tile-based maze runner with collision walls, ghost AI, and a scoring loop. Here's how it actually goes when you stop reading tutorials and start putting it together.

Create the maze first. Don't script anything yet. Model the walls out of baseparts and snap them to a grid — 32 or 48 stud tiles work best for a standard 28-by-28-ish layout. Keep every wall piece the same dimensions so you can reuse them across the whole map. I spent about two hours once fighting a bug where the ghosts kept clipping through a single gap, and the problem was one wall segment that was 0.5 studs shorter than the others because I moved it without re-snapping. Everything lines up by checking the coordinate in Studio and making sure the corners match exactly. The player movement is the part everyone underestimates. Pac Man doesn't turn freely. He moves on axes, and he only changes direction when he reaches the center of a tile. If you give him free-form movement control, the game will feel wrong immediately. You need a grid-locked input system where the player presses a direction, the code waits until the character's center is within roughly one stud of the next tile midpoint, and then applies the turn. Here's the practical approach: store the maze as a 2D array where each cell is either walkable or a wall. When the player moves, check the next cell in the current facing direction. If it's a wall, stop. If it's empty, continue. If the player pressed a new direction, queue that direction but don't apply it until the player's position is close enough to the tile center. That distance check is usually something like 2 or 3 studs depending on your tile size. This is why your Pac Man sometimes feels like he's drifting into turns early — you skipped the alignment check.

Dots and power pellets are simple to set up but easy to mess up if you do them poorly. Spawn them as individual parts or use a single merged mesh with touch detection. If you go the individual part route, you'll have around 240 dot parts in a standard layout, which is fine for modern hardware but makes sorting and cleanup slower. Merging them into a single part or using an impact event system instead of touch is noticeably more performant and avoids the ghost collision edge case I hit early on where the touch event would fire twice on a single dot if two parts overlapped slightly. Ghost AI is where most people either give up or make something that just walks randomly. The original game uses four distinct behaviors. Blinky chases Pac Man directly. Pinky targets four tiles ahead of Pac Man's facing direction. Inky has a complex flipper mechanic that uses both Blinky's position and Pac Man's position. Clyde switches between chasing and scattering when he gets within eight tiles. You don't need all four at launch, but building at least a chase and scatter state machine will save you a lot of headaches later. I started with only a simple random wanderer and had to rebuild the entire pathfinding system because the ghosts couldn't corner the player or respond to power pellets. Going with A* pathfinding per ghost per frame is too heavy. Compute paths every half second instead, and cache the target tile rather than recalculating continuously. The tunnel wrapping on the left and right edges is another detail people forget. Your maze array should handle column wrap-around so that when Pac Man exits the left edge, he appears on the right. This is one line of logic but breaks instantly if your grid isn't consistent across that boundary.

Sound effects matter more than you think. The chomp sound needs to loop while Pac Man is moving and stop when he stops. If the audio doesn't gate properly, you end up with overlapping chomps that make the track sound muddy. Use a single looping sound on the player with a check on movement state rather than spawning a new sound every time he eats a dot. For the ghost scared mode, keep track of a timer that flips a boolean on the ghosts. When active, they move slower and use a different target or reverse direction. The flashing pattern at the end of scared mode is usually done by toggling the material or color every half second for a few cycles before they become vulnerable again. Don't overcomplicate this — a simple coroutine that counts ticks works fine. Scoring is straightforward but easy to get wrong with the fruit spawn. The original game has timed fruit spawns at specific dot counts. If you're aiming for accuracy, implement a fruit timer that checks score thresholds and spawns a fruit part at a fixed location for a limited duration. Fruits are worth different amounts and only appear for about ten seconds in a full game. You can skip this for a basic build, but it's noticeable if it's missing.

What goes wrong and what to do about it

Performance tanks if you use part-based collision for everything. Ghosts, pellets, walls, and player interaction all adding up. I ran into this when I added more than three ghosts and the frame rate dropped to around 30 fps on integrated graphics. Switching the ghost movement to use Region3 queries or spatial partitioning instead of checking every wall part cut my lag significantly. Even simpler: just use the grid array for collision checks entirely and skip wall parts for gameplay logic. Render the walls for visibility but do all movement calculations against the data structure. This is the change that matters most. The second common failure is the ghost box. When all ghosts are eaten and respawn at the ghost house, the door needs to be passable by ghosts but not by Pac Man. The fix is a layer-based collision system where ghosts check a separate layer mask. In Roblox, you can do this with CollisionGroups. Set Pac Man in one group and ghosts in another, make them not collide with their own group during edible mode, and toggle that when needed. It took me about twenty minutes to figure out why the door was still blocking Pac Man after the ghost house update — I hadn't updated the collision group state after the power pellet ended. If you plan to publish this, expect the first few builds to have the player getting stuck on tile boundaries. It happens because your character model is wider than your tile clearance. Shrink the collision radius slightly or add a small buffer so the player can pass through without snagging on wall edges. A radius of roughly 1.5 studs works for a standard Roblox player rig on a 32-stud tile.

Here's how to actually download and play Pac Man Roblox. It isn't a single file you install. It's a Roblox experience published by various creators. Go to the Roblox website or app, search for "Pac Man", and you'll find multiple versions. The most popular ones tend to have the cleanest implementations, but quality varies wildly. Some are clones, some are mods, and some are unfinished. I recommend checking the visits count, the update date, and whether the creator lists features. A version with over a million visits and recent updates is usually more stable than a brand-new one with a similar concept. If you're building your own version to publish, start with the grid, get movement right, then add one ghost, then the rest. Don't stack features before the core loop runs cleanly. Most people try to add fruits, sound, animations, and AI in the same session and end up with something that crashes on launch.