Love the game, hate this app. 1st- The AI in this game is very noticeably stack against the player. Around stage 15, the AI consistently gets hands that allow them to play and frequently win 1st turn. While u struggle 2nd- Each stage = 1-10 phases. 1 phase = 5 energy. Energy max =30 & with the AI issue, you run out before you come close to completing a stage. There are "free" ways to earn energy. You dont get much & time it takes for adds/etc , you'll spend much more time in ads than playing.