Let's discuss specific games with developed RMT, account trading, game currency, etc.
Let's start by listing a few genres where trading for real money is well developed:
MMORPG
World of Warcraft (WoW) Classic & Retail: The absolute leader in terms of RMT scale for almost 20 years. They sell gold, character leveling, dungeon runs, and raids for equipment (boosts). Why this game? It's simple: it's the leader in terms of the number of players in its genre.
Final Fantasy XIV (FFXIV): A very popular game with a huge audience. RMT thrives here in the form of selling gil (in-game currency), leveling, and raid boosting.
Elder Scrolls Online (ESO): They sell gold, item sets, and content completion services.
Lost Ark / Black Desert Online (BDO): Korean MMOs with a brutal grind. RMT is especially popular here, as it saves hundreds of hours of routine farming. In BDO, items for enhancement (Stones of Courage) are particularly valued.
Old School RuneScape (OSRS): A legendary game where trading gold (GP) is a huge business. The game's economy is practically tied to it.
ARPG / “Loot Shatters”
Path of Exile (PoE): Has an extremely complex economy based on exchange. Valuable currency items (such as Divine Orbs and Mirror of Kalandra) are actively sold and bought for real money, especially at the beginning of new leagues.
Diablo II / Diablo II: Resurrected: A cult classic game where trading for real money existed even at the dawn of the internet on forums and through drop transfers. Runes, unique items (artifacts), and so-called “FG” (Forum Gold) are traded on specialized websites.
Diablo IV: Despite Blizzard's attempts to combat it, RMT exists through the sale of gold, boost services, and rare items.
Sandboxes with open economies
EVE Online: This is the most striking example of a legitimate and illegitimate economy. Huge corporations wage wars, and the cost of ships is calculated in billions of ISK (in-game currency), which directly stimulates RMT. They sell ships, currency, shares (PLEX), and entire accounts.
Tactical shooters (skins)
Counter-Strike 2 (CS2): Although Valve has created an official marketplace (Steam Market), a huge amount of unofficial RMT takes place on third-party sites (such as DMarket, SkinBaron, etc.). Expensive skins for knives, gloves, and rare rifles (such as the AWP Dragon Lore) are traded. Prices can reach tens of thousands of dollars.
Rust: In this game, item skins are also highly valuable due to their rarity and demand. Trading takes place on third-party platforms.
Browser MMORPG games
Combats: Trading involves accounts and game currency credits, as the investment in this game to maintain characters is very large, with prices for accounts reaching millions.
Ereality: A game similar in popularity to Combats, trading is very much focused on accounts and game currency, as in all similar games.
Mobile games: there are many options in this genre, here are a couple of examples:
Dungeon Crushers: Users invest heavily in this mobile game, wars, PvP, and much more, so demand for all of this outside the game is also high.
Roblox: Boosting accounts and trading accounts themselves is very developed, with many players, hence the high demand.
Important caveats:
Violation of rules. In almost all games, RMT is strictly prohibited by the terms of service (EVE Online is a partial exception). Doing so can result in a permanent ban of your account and all its assets. Therefore, act wisely. If you do decide to sell or buy, do not reveal any information that could identify you and lead to a complaint being filed against you.
Fraud. The RMT sphere is teeming with scammers. You may be deceived by not receiving the goods after payment, or by receiving items obtained illegally (by hacking an account), which will lead to their confiscation and your ban. Approach everything with a guarantor. On the website garantmarket.net, you can sell or buy your goods with the support of a guarantor who knows all these subtleties and can protect both parties.
Security. Buying accounts is a huge risk if you act without a guarantor. The seller can almost always restore the account to themselves through support by providing old data, so work with a guarantor at garantmarket.net and use a contract. Yes, the service is paid, but the protection after the transaction is worth it, as it can protect you after transactions.
Conclusion: RMT is most developed in games where virtual assets are highly valued by players, and the process of obtaining them requires a tremendous amount of time or luck. It is a huge shadow economy that developers are constantly fighting against.
You should understand that this list was compiled in general, not based on any statistics. Hundreds of similar lists can be made, so if you want to make any decisions based on this article, it is better to look at the market and the ads on it.