Normal mapping

Description: This is a game I made (in 2007) for 8th grade school classes, so pupils could train their geometry skills to upgrade the furniture. (the game was also made to experiement with normal mapping with 2D sprites.)
Instructions: Find the * on the screen and write the following codes to upgrade the furniture:

                | furniture | level 2 | level 3 | 
| chairs | idkfa1a | idkfa1b |
| table | idkfa2a | idkfa2b |
| floor | idkfa3a | idkfa3b |
| walls | idkfa4a | idkfa4b |
Restart game