These monument icons (while a fun addition) aren't necessary to play the game, but we figured we should make them anyway. Printed sets of these may be included as rewards for the "Invader" pledge level, but if you have access to a 3D printer you can download them here and print them yourself.
We've set up a Patreon page for anyone who's interested in helping to fund us so we can keep making free and open sourced games like Pocket-Tactics, Wayfarer Tactics. and others, not to mention the growing catalog of gaming miniatures that you can use for whatever you want! (Psst... we take requests and commissions...)