1.jvm changed from AdoptOpenJDK to AdoptOpenJRE I asked them things about publishing OpenJRE on github several months ago, https://github.com/AdoptOpenJDK/openjdk-build/issues/801 and now they published OpenJRE,so we can change to OpenJRE safely. If you are still wondering about "what are the difference between JDK and JRE", just google it yourself.Thx. Briefly, you can just think we delete some things you will never use to free your disk. Thanks a lot, AdoptOpenJDK organization. 2.garbage collection system. In former version of the engine, we can only load the resources and release the resource by bare hands,. That means the programmers using this engine must be very careful to make sure not causing any trouble.(unload a currently used resource might cause fatal error) That works, because as a fact that 2D pixel game hardly ever can take over more memory than a modern PC (if resources are well pre-compressed), so we can just load them during the game, and unload all resources just before closing the game. But that is too ugly, so I just add a garbage collector into the engine. I wish there be no more bugs but I can't promise it. 3. change log utility from homemade LogUtil to slf4j+log4j As you can see I am always trying to use as less codes from others as possible . But there always be some reasons to force me rely on others. Btw first version of this engine is even not using lwjgl (I used Swing then). And of cause we meet severe performance problems so we have to change to lwjgl. Now we face a similar problem on logs: the output log file is too ugly for the health of my eyes. As there be large amout of editors/plugins to deal with slf4j format log,and they are coloful, they are shiny, they are beautiful, blablabla, so I decided to change to slf4j for logging. I hope this is good for bug track. I wish there be no more bugs but I can't promise it. Thanks a lot, slf4 and log4j. 4.suport 32 bit windows I fixed some codes in my engine so theoreticly we shall be able to run this engine on 32 bit windows now. But we still strongly suggest you use 64 bit windows to run this engine, to avoid any strange troubles. Thanks a lot, AdoptOpenJDK organization.(Again.) 5.Others Maybe you are curious about what I did during the last month. Yep, I played through far cry 4, and primal,and 5 Although I cannot kill [the father] but still, praise the ubisoft! I also suffers lunar new year(or, spring festival) As is know to all spring festival is a very important event to we Chinese, and if someone doesn't perform well in spring festival, He will be sliced to several pieces by angry relatives using a thing looks like red envelope or card knife or something. Just joking, they never do such things, forgive me mom:aos2sham: I also find some time for a script language. Yeah you know that all game engines (if not toys) have one (or even several) script language runtime, which makes game developers easier during work. Of cause we can use nashorn lib in jvm to invoke javascript code, but narshorn is too complex/black-box , and we cannot 100% control it. and I HATE JAVASCRIPT!!!! Wren is a strange script language ,and I see its potential. I wanna change it a lot and then put it into our engine. Well we already finished the modification of the language rule and I just named it Wren# The next thing is implement a Wren# vm in java. Maybe I just overdo it and change too much things, some of my new grammars cannot be dealed with the current Wren vm code. So we have to rewrite it to make it usable. That is the reason why I didn't update it for soooo long. By the way far cry is really good game series. But I hate Hurk. He say too much words. Just like me. I hate him.