● Engine: ○ The physical response of 30 milliseconds is used, which is better than the original 60 milliseconds. ● Deep forest: ○ The "Yellow flute" is officially introduced, and when the yellow flute is used after the fifth wave, it will enter the "yellow flute process." [olist] [*] In the Yellow Flute flow, the BOSS will be harder, and there will be a BOSS guard. [*] Moreover, in the wave number of 4, 9, 14, 19, etc., there will be a new set of elite enemies. [/olist] ● Difficulty related: ○ Using a more compact DAU flow process, the appearance of enemies before the BOSS will be more compact. In contrast, the player will be rewarded with more items for killing enemies. ● System: ○ Added the option to support 5K resolution; ○ Added the option to support full-screen mode. ● Some new bullet types: ○W round, a type of bullets fired by wingmen, which automatically attack enemies and withstand damage. ○H2 bomb is an advanced version of the H bomb. ○R2 is an advanced version of R. ● Elite Monster: ○ Remove the setting that will drop the key; ○ Changed to drop Level 2 emeralds; ● Operation: ○ Remove the V key deceleration setting; ○ Remove the Z key acceleration setting, and change the Z key to slow down; ○ Character base movement speed increased. ● Background: ○ A new background processing system is introduced. ○ Optimized the original background display practice, so that under the new processing system, the background processing performance may be more than 50% rendering improvement.