No rules, do whatever you want.

Here’s my 2nd challenge cipher from 2015 (unbroken):

KKxbh/K@.KKrSs>cH
>GIlJKXluI^L2lJmK
.@Ql?Ln0j=,jIE@fb
N?'u)(0,iQXd+YH=]
')oK3YWezajUKL2
T:f'ICKeLS0>V(i+
.ijrn?KEzUCGQtFKG
KKJ:mR+E]B6BKXmJj
,MugYaz)H)V?R2Ec.
@sd3`sICTMg]hRTGS
G^K!GUr.Yx!iJg]K
,?i:WMJ:M6C,K^6r
Tx(F`UK(o@.3)tH(J
jLSmF>)zXY=j+.S'l
C2,ja]'n.EL/,rna2
l0>?Mdih]hcd/HWH0
Vj2@s0W=ulY2`jEfB
2+.@DKzUNr:tK!aS
mKLWuKLtsUbmKV`/x
KN(3fhJVoF>BaQMuX

And here’s a new one for 2016:

)M=!H7RF.?-GA=9N5
,H9+,@V7H]L_(,1&
;?C3*^T-0/XD<!ZA]
(ZGNE,EQ`_H>:XNCH
/5LH^<;E2>W!EAF#1
9.=_]E_P2/%S:-20
`D&GZX)>+3=3IZ2#*
,CPL?^U<#W!#5ASE
9%WN2(`/Z]2+#(,0
X@V![_L:,C&-;*^3
#!T5?*ZA1C?PL%V#/
(E&]E2I9`1D5;_AS#
:@R#9NWC*-+VPH0I
&E-,TT73H/#%U[@<Q
R)GLW=]5@#DF_;&:/
#NS?/CZ+I(2,G^?*L
U#P.ARTF!Z1;>AF]/
#_S#+:7#3EQ&0ZN9X
-*F],L?C]P;U#[5
SG*ZAP(`39F^7#.W!
=%#92L>A/ZNT15

Have fun.