Get paid to play video games

Once you know the importance of the Google Play Store alternatives, you must be impatient to know what are the lists of the alternatives available. A quick search from the Google and Wiki could provide you the answers. Here are some of the app stores listed down according to the Alexa Traffic Ranking at the time of writing:

Index	App Store	Alexa Ranking
1	Amazon Appstore	6
2	Opera Mobile Store	1137
3	Appbrain	9861
4	Samsung App Store	24680
5	Getjar	27146
6	Baidu Store	5
7	Taobao Store	10
8	Appchina	7559
9	Wandoujia	7669
10	Tencent myapp	21495

Notes:

• The Alexa Traffic Ranking is assessed based on the domain name instead of the App Store. Hence, the ranking of the already-popular sites such as Amazon, Opera, Baidu, etc might be a bit misleading. However, since they have a strong and resourceful background, their future prospect could be optimistic.
• The market in China is potentially huge. If you are able to translate your games / apps into Mandarin, you might want to penetrate into the Chinese markets.
• Here shows another clean list of the Google Play Store alternatives apart from the Wiki.