Nice concept and visuals!
Feedback:
- It's a little too easy to just play defensively for many of the levels, since holding onto at least one temple is enough to stay in the game and waiting for your opponent to move their boats into range is a reliable way to win. There needs to be more pressure to incentivise the player to make moves and take risks.
- Although it's described like a strategy game, it really is more of a puzzle game where the puzzle is figuring out the strategy for each level. In this way, it's not so engaging for multiple levels in a row to have the same "solution". I would suggest cutting some levels and keeping the pace up in terms of introducing new ideas and units at a solid pace. Attactics from UFO50 might be a good inspiration for how to pace things here.