Klass of '99 is an unofficial PC conversion/remake of 1984 ZX Spectrum game Skool Daze. The player controls Eric, a mischievous pupil who sets out to make his unfavourable report "disappear" from the school computer. The game follows Eric's day-to-day school life presented from a side view of the premises. You need to attend classes and try not to get infractions for skipping lessons or other delinquent behaviour. All the while the player needs to assemble pieces of code which will allow to delete the report from the computer. Klass of '99 was created as a fan project and updates the visuals and sound of Skool Daze, as well as adding new game elements. It is possible to customize the colour scheme of the school uniform (default is black), as well as set the type of weather outside. A recent Windows version with widescreen support is also available.