Here is a list of inexpensive-but-very-useful books for grammar games. With the exception of
Shenanigames, all of these books have saved me at some point during the semester:
Grammar Games - Contains Grammar Monopoly, Grammar Checkers, Grammar Auctions, and Grammar Snakes and Ladders
Fun with Grammar - Several hundreds of pages of grammar games that involve writing, listening, and speaking. Also includes several board games that you can just print out on the fly whenever you're in a rut.
Shenanigames- Great cut-outs for memorization activities. Be forewarned that you may need to do a bit of pre-teaching with this book as there will be many words that the students don't know.
Five-Minute Activities -Does a great job with reinforcing some grammar, although grammar isn't the emphasis here.
Recipes for Tired Teachers-Again, great for reinforcement but not necessarily emphasizing grammar rules per se.
Grammar Practice Activities-Penny Ur is the absolute QUEEN of grammar. Follow this woman's work like there's no tomorrow! You'll thank me later!
Hope this helps!
-T