Screenshot of program
This program tests a set of characteristics, some of which are related to behaviours in GameMaker games specifically.
Program includes English and Russian localizations, with additional ones being easy enough to add (if wished).
It can be considered non-interactive (apart from being able to pause tests at any time by pressing a key), however visual presentation is kept at good level, making two minutes, that it takes program to perform all tests, worth looking at.
To keep things 'transparent', a source is included in download. There is no set license for it, but makes itself useful, if you're curious, how everything works in test.
Some of code in source is quite rushed (often done in spare minutes), but I've added documentation to all scripts, and generally code style is kept intact.