Alpha accounts are free and allow players to access most of the "Eve Online" game, with exceptions. Alpha players cannot train skills for some advanced ship types or modules, including all Tech 2 ships and most Tech 2 modules. Alpha accounts can also only passive train up to 5 million skill points using the normal skill training system. After that limit, the only way they can acquire more skill points is by converting to Omega, or by using skill point injectors (available on the in-game market). In December, 2017, an additional item called a Daily Alpha Injector was added to the game, available for purchase via the official game store for PLEX. This item is only usable by Alpha accounts, is only usable once per day, awards an amount of skill points roughly equal to a full 24 hours of training time, and costs slightly more than 1/30th as much as a 30-day subscription. This allows Alpha accounts to progress at a similar rate and cost to an Omega account even beyond the 5 million skill point limit, but to purchase that progression in smaller increments than a full 30-day subscription. Alpha accounts are limited to a specific list of skills and levels in those skills, and are unable to inject skill points into disallowed skills or beyond the maximum level in allowed skills. Alpha accounts have approximately 20.5 million skillpoints worth of skills available to them.