There are three major ways to get new heroes in the Facebook game Marvel: Avengers Alliance. You can buy them with command points (CP), earn them by being one of the best players in PvP, or earn them by completing all the tasks in a special operation. The last way can be tricky, but can also earn you some of the best heroes released in the game. All special operations require you to collect and spend unstable ISOs (U-ISO) in order to complete the tasks. Depending on the task, you may need anything from a few hundred unstable ISOs to a few thousand. For the harder special operations, this requires farming this resource. The following guide will teach you all the tricks you need to know to farm unstable ISOs in Marvel: Avengers Alliance.
Gifts – The simplest way to farm unstable ISOs is to collect them as daily gifts. You can collect up to 50 total gifts each day. During a special operation, you may send U-ISOs as free gifts. There is a button that allows you to ask your friends for a specific type of gift, but this is generally considered in bad taste. The better option is to simply send U-ISOs as gifts to all your friends. You may send as many as 10 per day. When your friends collect these gifts, they will automatically resend that gift back to you. Thus, sending all of your friends 10 ISOs on a day can easily net you hundreds in return. During a special operation, ignore all gifts that aren’t ISOs and simply collect and resend daily. During the average 30 day cycle of one of these events, you will collect approximately 1500 this way.
Friend Visits – During a special operation, U-ISOs appear as one of the collectible items when you visit friends. You can visit each of your friends every day and collect up to four items from each friend. On average, you will get approximately one unstable ISO per friend visited. Keep in mind that you can visit both active friends and inactive friends. If you have the maximum number of friends for your account, 50, you will practically double your daily “income” of ISOs. While farming this way, note that you don’t have to actually mouse over the item to collect it. Once you have clicked the building with the item, you receive it. You can click on buildings rapidly and even switch to the next friend page before the animations are complete on your current page.
Battle Drops – During battles, enemies will sometimes drop items. They can even drop U-ISOs. If you have a lot of spare energy and patience you can farm them this way. Start a mission in season 1 or season 2 and fight to the boss without defeating any mini-bosses. The best missions to do this on are missions with at least two mini-bosses or any mission in chapter 12 of season 1, if you have unlocked that. Bring along heroes that score a lot of critical hits. Fight the enemy until you see a U-ISO drop. Once it does, stop fighting and recharge for the rest of the fight, letting the enemy kill your heroes. If you are about to kill the last enemy, reload the game to end the battle. About 90% of the time you will get an unstable ISO before killing all enemies or having to reload.
PvP – If you don’t have spare energy, but do have spare challenges for PvP, you can also get ISO drops from PvP. Items won’t drop in practice, so you will have to risk your PvP rating for this. In fact, you will probably lose a lot of rating in the process, but this will make farming easier. Bring a team full of characters that score a lot of critical hits. Ignore defense and simply attack with the power most likely to score a critical. You want ISOs to drop and don’t care about winning or losing. Losing is beneficial because easier opponents are more likely to be weaker and easier to score critical hits on.
Deployment – This form of farming actually costs unstable ISOs, so you only want to use it when you are going through a special operation mission for another reason. When a deployment calls for a specific hero, it has a chance of rewarding you with 10 ISOs. Many special operation missions can be completed at the same ISO cost if you only do missions or if you complete a few deployments while doing missions. As a rule of thumb, this means that if a mission requires you to deploy a specific hero, rather than a generic hero or a hero of a specific class, you should deploy that hero. You will spend the same number of unstable ISOs to reach the boss as if you didn’t and you have a modest chance of having your investment returned to you, which can’t happen when you simply complete threats.