It’s all about keeping the math tight and the code clean. First, you lock the game to a fixed frame rate, so every tick is predictable. Then you store position as sub‑pixel integers or floats and update it with a fixed acceleration or velocity each tick. After the update you round the final position to the nearest pixel before drawing – that’s the pixel‑perfect snap. Use a consistent gravity, friction, and input response curve; tweak the values until the motion feels natural and the frames line up. Finally, run a sanity check: trace a few frames in a debugger and make sure the position never slips off by a fraction of a pixel. That’s how I keep every pixel on point.