For now, there are 2 games that I really really like and want to play/review, what you said is right, Warwick J., and for me, these games are even more than wishlist, I know exactly what I expect from them.

• Kingdom Rush Frontiers:
  I love Kingdom Rush games, I played all web version of them (flash based, years ago) so I know how good they are, really want to try Steam version because there are more contents.
  
• Enter the Gungeon:
  As a fan of rogue-like indie type, there is a similar game like Enter the Gungeon is Nuclear Throne - which is my favorite game, its true that if I have only 1 choice to keep only 1 game in Steam library for now, I'll choose Nuclear Throne, no-brainer. Anw, first time seeing Enter the Gungeon, I know it's my type, like Nuclear Throne, no doubt, can't miss it.

Didn't notice that Kingdom Rush Frontiers just released on Steam, I love Kingdom Rush series more than any other Tower Defense games in the world
http://gtm.you1.cn/storesteam/app/458710