I don't have any good word game recommendations. Have you tried any of the match 3 games? I like Candy Crush Soda, Toy Blast, Toon Blast and Diamond Diaries (I've been playing these for years). These are all available through Google Play and I have no issues running them other than the occasional crash on my 11 year old Nexus 7 tablet. I also like a game called Hay Day. It is a farming game like the one that Facebook had. I can't recall the name because I don't use Facebook and never played it.
Shari