In the console versions of the Skylanders games, the small colorful globes left behind by enemies or when winning an arena match are called Victory Points. When enough points are collected, the Skylander will gain a level up. In Skylanders: Spyro's Adventure, Skylanders can use Victory Points to get to the game's highest level: 10. In Skylanders: Giants, Skylanders can use the points to go to the highest level in that game: 15. In Swap Force, Trap Team, and SuperChargers, 20 is the maximum level cap.
Larger enemies and bosses will yield a much greater amount of Victory Points, and defeating an enemy with a Skylander that shares an Element with the current elemental zone dramatically increases the Victory Point yield. Furthermore, as of Swap Force, all Victory Points collected in two-player co-op are given to both players equally, regardless of who collects them.
In Giants, activated Luck-O-Tron Wheels of Experience provide a small chance that a defeated enemy drops more Victory Points as if the Skylander defeated it in an elemental zone of the Skylander's Element, regardless of what Element the Skylander is.
When a Skylander increases its level to a value that is greater than a level cap of an earlier game, and the same Skylander is used in an earlier game, the Skylander's level will be that game's level cap instead of the higher level. For example, if you level up a Skylander in Trap Team up to level 20, and if you use that same Skylander in Giants, the Skylander's level in that game will be read as 15 while the Skylander's level is saved as 20.
In the 3DS version of the series, the Skylanders upgrade by leveling up.