(UNFINISHED) If you haven't played the first Tunnels, it is recommended you do so: https://scratch.mit.edu/projects/60018768 Click the ball on the game select and hit play to start Tunnels 2. Upon first completion of Tunnels 2 you will get a code that you can activate on the game menu. Restart the game with green flag to use it. Full list of codes below (SPOILERS): . . . . . "Labryinths" : Given at the end of normal mode. Activates inverse mode. White are now walls, black/grey are safe. "DoubleVision" : Given at the end of inverse mode. Activates swap mode. Use Space Bar to swap between white and black modes. This will allow to access a new set of levels. "HiddenInTheMaze" : Given at the end of swap mode if you didn't find the key. This code unfortunately was never properly programmed in, but it would've unlocked various goodies like extra info or secret areas in other games. The name of this code is a hint at where the key is, however! If you have the key you will be able to go beyond every ending and reach the killscreen. The killscreen was going to be the start of another set of levels but I never ended up making them.
(UNFINISHED) I wanted to revisit some of my older games in the form of one larger collection, complete with new levels and mechanics and such. I only ever made a sequel to Tunnels, which wasn't even completely finished technically since I was going to add another set of secret levels but never got around to it. Regardless, this is actually pretty fun to look back on!