What is a better laptop for gaming the Lenovo g505 or the toshiba satellite nb10t-a-101?

The Lenova, but laptops are not really the ideal thing to game on. Unless you spend a lot of money.

Minecraft and DayZ are completely different games in terms of graphics demand. You will want a laptop with a graphics card of a gt 645m or better. Integrated graphics won't do the job. And be aware that even with a discrete graphics card, Dayz will still likely only run at medium settings at best. Based on the computers listed I'm going to assume that your budget is $400 or under. In that case, you may be able to find a laptop that runs Minecraft, but definitely not dayZ. In my opinion, if you upped the budget by $200 you can get a dramatically better computer. And it will last a lot longer. But if I had to choose between the 2 I would choose the Toshiba. Also I would shoot for atleast an Intel Core i3 processor, but if you can't, the celeron on the toshiba is better than the amd e2100 on the lenovo.