I’m from UK and “Jagex is” sounds equally weird. What pronoun would you use for a corporation? I would use “they”. Would you use “It”?
Notice “skate” versus “skates” in these cases:
- Alice skates; Alice is a skater.
- Alice and Bob skate; Alice and Bob are skaters.
- She skates; she is a skater.
- You skate; you are a skater.
- You skate; you are skaters.
- They skate; they are a skater.
- They skate; they are skaters.