Game 3 first try 684 points
(monster, if you had known jer was a word...hmmph. seriously, I just typed it in to see what would happen. What is a jer?)
-4: rn. Word not in dictionary.
+142: jer. 59 Points +2.4x Multiplier.
+21: teen. 6 Points +1.5x Word Length. +2.3x Multiplier.
+74: zoo. 32 Points +2.3x Multiplier.
+27: root. 8 Points +1.5x Word Length. +2.3x Multiplier.
+84: gives. 19 Points +2.0x Word Length. +2.2x Multiplier.
+47: barer. 11 Points +2.0x Word Length. +2.2x Multiplier.
+22: miss. 7 Points +1.5x Word Length. +2.1x Multiplier.
+22: soon. 7 Points +1.5x Word Length. +2.1x Multiplier.
+68: biz. 34 Points +2.0x Multiplier.
+10: ice. 5 Points +1.9x Multiplier.
+18: fie. 10 Points +1.8x Multiplier.
+38: wean. 15 Points +1.5x Word Length. +1.7x Multiplier.
+22: nude. 9 Points +1.5x Word Length. +1.6x Multiplier.
+25: pang. 11 Points +1.5x Word Length. +1.5x Multiplier.
+15: rice. 7 Points +1.5x Word Length. +1.4x Multiplier.
+5: ire. 4 Points +1.3x Multiplier.
+26: lucre. 11 Points +2.0x Word Length. +1.2x Multiplier.
+15: tales. 7 Points +2.0x Word Length. +1.1x Multiplier.
+7: his. 7 Points