Coins are the core currency in the game and are commonly found in the world. Coins can be spent to equip Perks before each run.
To collect coins, run over them with your speeder.
Shards are awarded as prizes from completed Daily Missions.
Shards can be spent to upgrade Power-Ups and to continue a run when the speeder is destroyed.
You can also convert Shards into Coins from the Perks menu.
Artifacts can be won in the upper Tiers of the Tournament, and as occasional prizes in Daily Missions.
Artifacts can be spent to upgrade the most powerful Power-Ups, and to unlock additional Perk slots.