What these disputes look like
On the player side: accounts banned or closed with purchased items and currency inside, purchase and refund disputes, chargebacks that trigger further restrictions, and concerns about randomized purchase mechanics and how they are presented to younger players. On the industry side: developers and publishers disagreeing over royalties, milestones, or who owns the code and the art. Streamers and competitive players run into sponsorship, exclusivity, and prize money problems, and disputes over voice, likeness, and user created content come up from both directions. Harassment and doxxing that began in game chat and followed someone offline also reaches us, and that is handled differently from anything contractual.
What to save before it is gone
Terms of service and the account agreement as they existed when you signed up, since these usually contain an arbitration provision and a class waiver that can decide where a dispute is heard before anything else is considered. Purchase receipts and payment records, screenshots with visible dates, the full support ticket thread including the responses you received, and any moderation notice explaining the action taken. For creators and studios, add the signed agreement, the correspondence where terms were actually settled, and records establishing who produced which assets and when. Access is frequently cut off at the moment a dispute begins, so copy everything out early.
Where these matters go
Many begin with the platform's own process, and that step is often required before anything else can be pursued. Arbitration is a common destination for player disputes because of the agreement everyone accepts without reading. Where a large number of people were affected by the same practice, claims are sometimes brought on a group basis, though the agreement language shapes whether that is possible. Studio and creator disputes usually turn on ownership of the work and on what the contract says about termination and payment. Time limits apply, and what they are depends on the state and on the kind of claim being brought.