Using articles in specific text

Welcome to (?) Blitz mode!
Earn (the) highest score by smashing (the) most Jewels within (the) limited time frame!
Collect and use coins to gain powerful bonuses:
-matches (a) nearby Jewel color
-destroys (a) 3x3 group Jewels
-gives you (?) additional 15 seconds
-turns nearby Jewels to (the) same color
-eliminates one color of Jewels from (the) field
Act quickly to fill (the) Thunder Bar and trigger (?) Mega Shake Bonus!
Jewel God gives you (?) full power of all 5 bonuses!