The core game is designed for 2-4 players, ages 8+. With each expansion, you can reasonably add an additional 2 players. So if you back at the Core + 2 expansion tier, you could play with up to 8 players.
There was a previous version of Dino Duel created by another company. It centered on "War" mechanics and has since been discontinued. We purchased the trademark and domain in 2017 as we were designing the game. We will likely be updating sites like BoardGameGeek as we have a published game so that folks can distinguish between the two.
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