I’ve been thinking about this for some time, and decided to put down my thoughts. Now, I realize that I’m a complete newbie Android game developer, so others who’ve been doing this longer may have a different opinion, and even a different experience, with Amazon. But I’ve been watching how things are progressing, and I’ve interacted with the Amazon AppStore as a developer, and I’m not too thrilled with what I’m seeing.
I’ve had some questions on this, so I figured a blog post going into some detail might be helpful. This post explains how to integrate Scoreloop’s CoreSocial SDK to implement, essentially, an in-game leaderboard. I believe this makes a game more engaging. If you can see your rank update right as you’re playing a game, it provides an incentive for people to play longer. And I’m sure you want people to play your game longer 
Once I figured out how to use Scoreloop to add in-game real-time updates for the global and daily rank, I had to add that to Bus Jumper too. I got that implemented over the last couple of days, and published an update this morning. Within a few minutes, my ACRA crash reporting tool told me that I had let a bug slip through, that could cause a crash if you exited the game while it was still trying to start up. That’s been fixed in version 1.0.7, so if you updated to 1.0.6, I would recommend upgrading to 1.0.7.
That’s the neat thing about the Google Android Market – newly uploaded versions go live immediately, so if you accidentally added a bug, your users aren’t waiting for days / weeks before they can get a fix.
Bus Jumper crossed 10,000 downloads on the Android Market yesterday. I think this warrants a little pat on the back for myself Not too bad for my second game ever, even if I say so myself. This also seems like a good time to compare sCatter and Bus Jumper.
Yesterday I published an update to sCatter that adds live in-game display of your overall and 24-hour rank. I’m using Scoreloop for the online high scores leaderboard, and so far I had just implemented the simplest form of integration – if you clicked on the ‘Scores’ button in the main menu, it launched the ScoreLoop activity. The analytics showed that very few people actually clicked on that button. I knew there was room for improvement there, but I didn’t have any ideas.