Awesome fantastic game! You can add jumps (obstacles). weird sticks. Colour sticks that can goes to coloured holes. Sticks that may broken if not transfered in specific time. You can add to transfer small puppies, to save people. It may transfer sticks heavier/lighter that some tiles may broken under weight. Tiles that move, tiles that are apperring/disappearing. Enemies that may need to not face. Birds that may try to stick on the stick. So many things.... doors with keys, traps etc. if you need game tester... or level developer....