High-Order Fun has a helpful guide to programming 2D platformers that walks through how to calculate basic movement, slopes, ladders, stairs, one-way platforms, moving platforms, jumping ...

Sprite sheets are often used in 2D graphics programming to optimize the rendering ... For example, if you have a tile-based game that uses 100 different tiles, you can store them all in one ...

GUI game editor ' Ct.js ' that can create 2D games is free downloadable software that allows you to develop games with JavaScript. It is not an editor full of character strings in which program ...