What is most likely is that they are making decisions based on spending habits in buying diamonds (your friend gets a lot of offers because he must accept just often enough that they know they can spam him till he gives in) and how you USE those diamonds. Perhaps those that buy more diamonds spend more on events and thus go through those extra diamonds faster. They give better offers no doubt to people that they'll expect to spend more money on the game because when they have diamonds they'll spend the diamonds. Send a +200% offer to everyone, Inno, it is way past due. Can't even use a new city bonus to add Castle points to my main. And the new Castle System skews it even more - huge Castle rewards when you buy diamonds, so I will see myself moving down the player rankings, passed by players not as good or consistent as I am in every aspect of the game, just because they open their wallets for offers. They have to code accounts for offers/no offers for the same people to get multiple 200% offers at the start of an event while others get nothing. Inno says it's random but it can't be random, not after 6 years of no offers. It is unfair for others to get diamonds to ease their play and get multiple event buildings at 1/3 the cost to me. The only offers I see are the lame ones everyone gets for 'get event currency when you buy diamonds'. I have NEVER gotten a +100% or +200% diamond offer, not once in 6 years.

I have been playing more than 6 years and have to say that the 100% and 200% sale offers that some players get are a real sore point for me.

How to get diamonds in forge of empires