If networking computers is your idea of fun then you'll be in your element with BEIKS NetWalk.
This free Windows Mobile game charges you with the task of connecting up a series of terminals to a server. To achieve this you must spin the tiles to change the position of the wires, hooking them together to create a circuit. Once a computer has been connected to the network, it will smile and the wire will turn blue.
NetWalk proves to be a fun and addictive puzzle game. It won't stretch your brain powers too much, so it's the perfect thing to play on the bus on the way home from work. You can choose from hundreds of different levels (just 10 in the demo version) and NetWalk lets you select any you like (i.e. you don't have to have completed the previous level).
In terms of its graphics, NetWalk isn't up to much. In fact, it feels like the kind of game that you would've played on Windows 95.
That said, if you're looking for some nerdy fun on your phone, it's worth hooking up to BEIKS Netwalk.