Repair tracks to re-pair the bots!
The bots slowly but surely follow the track that they are on. You must extend these tracks so that the bots will be re-united.
You can place tiles from the selection at the top of the screen.
The tile will be placed on the grid at the location of the cursor. The tile must extend an existing path and completely fit. Once placed, a tile cannot be removed.
You win when you successfully paired up the bots. You lose when a bot runs off the track, you run out of time, or bots of different types bump into each other.
The tiles that you are offered are randomly selected. However, you will always be offered tiles that fit somewhere on the grid. Furthermore, the tiles on offer will be unique. The order in which you place tiles and where you place them therefore matters. Exploit this to increase the odds that you get favourable tiles.
It helps to hedge your bets. Have a fallback plan in case you do not get tiles that match your perfect route.
At the start you may want to keep many open ends, so you can place "undesired" tiles somewhere. Towards the end you may want to reduce the number of open ends, to increase the probability that you are offered the tiles that you still need to complete your route.