Scratch is a graphical programming environment written by MIT. Programs are built using a series of toolboxes. Each character in a program is a sprite. Each sprite can have several associated scripts. The current version of Scratch was implemented in Flash, which is not properly supported on several architectures. For this reason, the games given in these resources were implemented in Scratch 1.4 which is based on SmallTalk.
These games have all been tested on Raspbian Linux running on a Raspberry Pi. However, they should run on any Scratch 1.4 installation.