That's a cool one, I like it. The dogs are cute and the triangle thing is probably one of the most creative usages of 3 in actual gameplay here.
I played this on my phone tho, and the game kinda stuttered a lot, it simply freezed for a few seconds everytime a new line was made, and sometimes it wouldn't unfreeze, so I couldn't actually finish any match sadly. Althought my phone is prehistoric, so I'm blaming it for those issues instead of the game lol