Any recommendations for online multiplayer cross platform Mac & PC games?

[UberTiger]

I have a PC and my relative has a Macbook and I'm trying to find a few fun games we can play online together.

I bought Command & Conquer 3 Tiberium Wars for Christmas but it turns out it's nearly impossible to get running on a modern macbook now

I've been looking through the steam catalogue to find any cross platform multiplayer games but I'm not sure the results are accurate. As it doesn't list Portal 2, but I'm pretty sure you can

Anyone got any other good suggestions of stuff I could try in the steam sale or non Steam games?

 

[UberTiger]

Thanks for the suggestions

I think I'm going to go with Portal 2, Trine 2, Altitude and Hedgewars for now to see how we get on.

Borderlands 2 would have been cool, but I'm not sure their macbook would have been able to handle it anyway.

Really annoyed with myself - I just went to buy them a copy of the Valve complete pack as it was £10 with a code earlier and now it's expired, doh! Ahh well. The rest will keep us going for a while.

The lego series could be a good call, will check that out too