You never need anything, but ...
these are very different games. Sentinel Tactics
and Heroes Wanted
are superhero themed tactical combat games ( Heroes Wanted
being a much lighter vp based competitive game - with some possibility for everyone losing, whereas Sentinel Tactics
is a scenario based 1vAll game). Clank! In! Space!
is a space fantasy themed deck building game with some spatial play on a board and a significant push your luck element.
I think Trains
has better board based play for a deck builder, but it is also fairly similar to Dominion
in game play, and does not have near the light tone in theme that the three games you mention have. Nor does Trains
have the push your luck element of the Clank!
There are other games that I also find to be better deck builders in general, but without knowing why else you were considering Clank! In! Space!
or what other deck builders you have played and liked or disliked and why you felt the way you did about them, it is difficult to provide a good recommendation.