Currently We are using Unity for our all our games and we are very happy with this. Unity community is huge and very supportive. There are so many tutorials for this.
Previously we have used LibGDX and Buildbox for our games. Unfortunately they were not made for us.
On word-grabber.com you can find different word generator tools to make words from letters for different word games like Scrabble or Words with Friends. It helps to shorten the letters to words and useful for keyword research.